Road-grader



(Np Model.) 2 sheets-sheen 1.A

o. E. MOATS.

ROAD GRADBR.

No.,376,156. PatentedJan. 10,1888.

, 2 Sheets-Sheet 2. 0. E. MOATS.

ROAD GRABBE.

(No Model.)

No'. 376,156. Patented Jan. 10, 1888.

UNITED STATES PATENT @Erica oRrUs E. MoATs, or DEcA'rUE, ILLiNois.

ROAD-GRADER.

SPECIFICATION forming paru o Letters Patent No. 376,156, dated January 10, 1888.

Application filed October 5, 1887.

To all whom it 11i/ay concern:

Be it known that I, ORTUsE. Mears, ofthe city of Decatur, county of Macon, and State of Illinois, have -inveuted`certain new and useful Improvements in Road-Graders, of which the following is a specification.

My invention relates to road'- graders in which a scraping and plowing blade is supported from a wagon or other Wheeled frame in a manner permitting universal adjustment, and itincludes the means for vfacilitating such adjustment, hereinafter set forth and claimed.

In the drawings accompanying and forming a part of this speciiication, Figure l is a plan of all the features of my invention that may be shown in plan with clear-ness, the relative position of the supporting-frame being` indicated by broken lines. Fig. 2 is a side elevation, on a reduced scale, of a machine einbodying my invention.

Like reference-numbers indicatelike parts in the different figures ofthe drawings.

Ihe scraper-blade 1 is attached to downward extensions of the approximately-horizontal arc 2. Cross-bar 4 traverses the arc diametrically, and is secured thereto by yokes, as shown, or by other suitable securing devices. Sprocket-wh'eel 13 is rigidly secured to an approximately-vertical shaft that has a rotative bearing in the cross-head 6 7 and that is rigidly secured to cross-bar 4 at the center thereof. Draft-bar 11 pivots at 12 to the front of the wagon or othergcarrying frame, and carries the crossheadgandthe adjusting hand-wheel 16.

Supported in the cross-head,and extended at right angles to the draft-bar, isa frame composed of parallel strips 8, which are separated by blocks 9 and bound by suitable bolts. The hand-wheel16 has sprocket-wheel 15 on its shaft, and chain 14 connects said sprocketwheel with sprocket-wheel 13. Shaft 43 of hand-Wheel 20 is supported vertically in bearings on the main frame in a manner permitting rotative adjustment, and carries wheel 21, having peripheral lock-recesses.

Wound around shaft 43 and secured thereto is chain 18, which passes around guidepulleys 19, secured to opposite sides of the main frame, and terminates at both ends in connection with block 17, which is rigidly secured to the rear end of the draft-bar. Lock- Serial No. 251,538. (Xo model.)

catch 23 is pivoted to engage the peripheral recesses `of wheel 2l, and is provided with the releasing-pedal 22. the catch in contact with the Wheel. The arc 2 is provided with a series of holes, 3, and a pin, 27, on the under surface ofthe catch-bar 25 on the draft-frame is designed to engage the holes and hold the are in any desired position of rotative adjustment. Chain 38 connects with catclrbar 25 at 26 and extends upward to a point readily accessible to the manipulatorof'hand-wheel 16. Yokes 5 provide means for securing the blade at different positions on the terminations of the arc,and the curvature of said terminations is such that a variation in the position of the connections will cause a variation in the angle formed by the blade with the ground. The main frame 29 has wheels 40 and a drivers seat, 42.

.Bars 36, secured to the sides of the main frame, provide pivotal bearings for the levers 30, two in number. Suspended from thelevers 30 are rods 37,. which connect pivotally at 39 with yokes that carry rollers 23 under the frame, composed of strips 8.

Brackets 34.011 opposite sides ot' the main frame carry a transverse shaft or bar, 33. Suspended from bar 33 are springs 35, that connect with the cross-frame at the points indicated by 10 in Fig. 1 and yieldingly support a portion of the weight of the scraping mechanism. Rack-uprights 32 provide means' for regulating the elevation of the rear ends of the levers 30. Step 41 provides ready access to the rear of the main frame.

In Fig. 1 the chain 38 and bars 37, with their -tlle positions of the rollers that support the cross-frame are indicated by dottedl lines, to

which the proper reference-number is ap-` plied.

is somewhat oblique with the horizontal, and as a consequence as the ends of the blade are swung-the one forward, the other backward-- from the arc through chain 38.l In using the Springs 24 tend to hold V As will be 4observed in Fig. 2, the draft-bar roc blade as a scraper at an angle more or less oblique it becomes necessary to neutralize the tendency of the front end to pitch downward, and this is effected and requisite pressure applied by means of the levers 30, which have independent adjustment and operate on the scraper-bar through rods 37, frame 8, and cross-head G 7.

While the blade is being used as a ploiv a firm and accurate adjustment will be necessary to lioldit to its work. Means to effect this adjustment are provided in chain 1S, pulleys 19, shaft 43, hand-wheel 20, and lockwheel 2l, with its coacting catch.

By means of the mechanism designated the rear end of the draft-frame may be swung laterally, carrying with it the entire scraping mechanism, and when properly adjusted may be temporarily but firmly secured by the catch of the lock\\'lieel.

I claim- 1. In road-graders, in combination, a frame supported on wheels, a draft-bar carrying a scraper-blade and connecting pivotally at its front end to the frame, anda chain secured to the rear end of the draftbar and passed around pulleys on opposite sides thereof, as and for the purpose set forth.

2. In roadgraders, in combination, a frame supported on wheels, a draft-bar carrying a scrapcrblade and connecting pivotally at its front end to the fra-me, a rotative shaft on the frame near the rear end of the draft-bar, and a chain secured to the dra ft-bar, passed around pulleys on oppositesides thereof,and connected with the shaft, as and for the purpose set forth.

3. In road-graders, in coinbinal ion, a frame supported on wheels, a draft-bar carrying la scraper-blade and connecting pivotally at its front end to the frame, a rotative shaft on the frame near the rear end of the draft-bar, a hand-wheel and a lock-wheel on the shaft, and a chain secured to the rear end of the drafthar, passed around pulleys on opposite sides thereof, and connected with the shaft, in the manner and for the purpose set forth.

4. In road-graders, in combination, a frame supported on wheels, a draft-bar pivoted at its frontend to the frame and having-its rearward extension inclined upward, a scraper-blade on the draft-bar having pivotal adjustment, a shaft on the frame near the rear end ofthe draft-bar, a hand-Wheel and a lock-wheel on the shaft, and a chain secured to the rear end of the draft-bar, passed around pulleys on opposite sides thereof, and secured to the shaft, in the manner and for the purpose set forth.

5. In road-graders, in combination, a frame supported on wheels, a draft-bar pivoted at its front end to the frame in a manner permitting universal adjustment, a transverse bar over the frame, from which the draft-bar is yieldingly supported, a scraper-blade on the draftbar having pivotal adjustment, a shaft on the frame near the rear end of the draft-bar, a hand-wheel anda lock-wheel on the shaft, and a chain secured to the rear end of the draftbar, passed around pulleys on opposite sides thereof, and secured to the shaft, in the manner and for the purpose set forth.

G. In road-gradcrs,in combination, the draftbar 1l, the crossliead 6 7, the cross-frame 8, adapted to be adjusted vertically at one or both ends by the levers 30 and their intermediate connections, the crossbar 2 under the cross-head, having holes 3, the detachable pin 27, the chain 38, connected with the pin and extended upwardly and backwardly, the scraper secured to the are, the shaft on which the arc pivots in the cross-head, the sprocket-Wheel 13 on the upper termination of said shaft, the hand-wheel 16 and sprocket-wheel 15 on a vertical shaft, and the chai n 14, connecting wheels 13 and 15, as and for the purpose set forth.

7. In road-graders, iucouibination,tl1e draftbar, the cross-head, the cross-fraaie, the supports for the cross-frame permitting longitudinal adjustment, the scraper-blade pivotally secured to the cross-head, the shaft on the frame near the rear end of thedraft-bar, carrying the hand-wheel andthe lock-wheel, and the chain secured to the rear end of the draft-bar, passed around the pulleys at opposite sides thereof, and scoured to the shaft, in the manner and for the purpose set forth.

ORTUS E. MOATS.

Attest:

Ina B. CUnTIs, EDWIN G. ALLEN. 

